(1) A driver is the person who is driving a vehicle (except a motor bike, bicycle, animal or animal-drawn vehicle).
1 Bicycle and motor bike are defined in the dictionary and "vehicle" is defined in rule 15.
2 "Drive" includes be in control of—see the definition in the dictionary.
(2) However, a "driver" does not include a person pushing a motorised wheelchair.
Wheelchair is defined in the dictionary.